How does the magnetic field set up by a solenoid change when:
a) the number of turns of the coil are increased?]
b) the strength of current is increased?
c) soft iron core is instead with in the solenoid?
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umm as we know the magnetic field inside is equal to
uni and hence
a. with increase in the number of turns magnetic field will increase.
B. with increase in the strength it will again increase.
C. by inserting an soft iron core magnetic field increase
because iron will get magnetised due to induction.
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